CVE-2026-49206

CVE-2026-49206 · rapidcsv: Integer overflow in iterator arithmetic causes out-of-bounds access

This page contains facts from public vulnerability sources. Check the original advisory before updating.

rapidcsv is a C++ CSV parser library. Prior to 8.99, RemoveColumn, InsertColumn, RemoveRow, InsertRow, and GetColumnNames converted size_t indexes to int before adding them to std::vector iterators. On 64-bit systems, in a CSV matrix dimension containing more than 2^31 elements, an index above INT_MAX could wrap to a negative iterator offset and point before the start of the vector, causing undefined behavior, heap memory corruption, or a crash. Triggering the issue requires an extremely large in-memory document, requiring tens of gigabytes of memory at minimum, so typical CSV documents are not practically affected. This issue is fixed in version 8.99.

CVSS 2.9 · Low · EPSS 0.2%

Published

2026-10-14T15:44:43.286Z

Updated

2026-10-15T19:08:15.368Z

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